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1. An attack against a vulnerable application could echo back entrusted data as part of a response header.
   针对脆弱的应用程序的攻击可能导致将受信任数据作为响应标头的一部分回送。
2. Then the originating caller sends an acknowledgement back to the recipient, which is a bit unusual because the station that initiates the call also sends the acknowledgement.
   然后，起始的呼叫者向接收者回送一个确认，这有点不寻常，因为起始通话的站也发送确认。